Sorrell’s Cannes Lions forecast

As The Drum prepares to touch down in Cannes, we look back on last year. If you want to keep up to date with the latest news, insights and opinions from Cannes Lions 2018, sign up to The Drum's daily newsletter today. 
For Sir Martin Sorrell, the news that Publicis was pulling out of Cannes 2018 was not necessarily surprising.
In The Drum's conversation with the WPP ex-chief executive, he pointed out at the time that four holding companies appeared to be having internal discu